Nebulizer

ABSTRACT

A nebulizer for a fluid, includes a container containing the fluid; a housing part which can be detached from the nebulizer for replacing the container; an inner part; a retaining element connected with and not detachable from the inner part, where the housing part is releasable fixed to the inner part by the retaining element; a delivery mechanism for dispensing the fluid; a manually depressible actuator member, which is a separate part from the retaining element and acts on the retaining element, and wherein the actuator member is depressed to elastically deform or flex the retaining element to allow detachment of the housing part.

CROSS REFERENCE TO RELATED APPLICATIONS

This application is a continuation of U.S. patent application Ser. No.15/942,737, accorded a filing date of Apr. 2, 2018, which is acontinuation of U.S. patent application Ser. No. 14/453,805, accorded afiling date of Aug. 7, 2014 (issued U.S. Pat. No. 10,004,857 on Jun. 26,2018), which claims priority to EP Application No. 13003987.8, filedAug. 9, 2013, the entire disclosures of which are hereby incorporated byreference.

BACKGROUND

The present invention relates to a nebulizer for nebulizing a fluid.

WO 2006/125577 A2 discloses a nebulizer which comprises, as a reservoirfor fluid which is to be atomized or nebulized, an insertable rigidcontainer having an inner bag containing the fluid and a pressuregenerator with a drive spring for delivering and atomizing the fluid.The container is pre-installed in nebulizer in a delivery state. Thepre-installed container is held by a transportation lock unmovablewithin the housing in the delivery state in order to avoid any undesiredopening of the container. Before being used for the first time a lowerhousing part of the nebulizer is completely closed. Thus, thepre-installed container is opened by a delivery tube piercing a sealingand a septum to fluidically connect to the inner bag of the container.Further, the transportation lock is opened so that the container canmove inside the nebulizer back and forth.

By rotating the lower housing part the drive spring can be put undertension and fluid can be sucked into a compression chamber of thepressure generator. Simultaneously, the container is moved into thelower housing part in a stroke movement within the nebulizer and whentensioned for the first time the container may be pierced through itsbase by a piercing element in the lower housing part to allow venting ofthe container. After manual operation of a stop element the drive springis released and moves the delivery tube into the pressure chamber sothat the fluid is put under pressure by the drive spring and isdelivered or atomized through a nozzle into a mouthpiece as an aerosol,without the use of propellant gas.

WO 2007/022898 A2, US 2011/0011393 A1, and WO 2012/162305 A1 disclose asimilar nebulizer. A container can be inserted into a housing of thenebulizer. The housing is closed by a lower housing part. The containeris moving axially forth and back during conveying of the fluid to benebulized, and during pressure generation and nebulization. A counterdevice can be arranged in the lower housing part. The counter devicelocks the nebulizer against further use if a predetermined number ofoperations has been reached or exceeded. Then, the housing part may bereplaced together with the counter device and the container. Thecontainer may be connected inseparably with the housing part. Further,the nebulizer comprises a device for permanently locking the nebulizerwhen a certain number of containers have been used or when a certainnumber of operations have been reached.

SUMMARY

Object of the present invention is to provide a nebulizer allowing easyand/or improved handling and/or secure or defined indication of handlingand state.

According to one aspect of the present invention, the nebulizercomprises preferably a blocking device which is adapted to block openingof the housing, when the nebulizer or, in particular, its energy storeis in a tensioned state (In this tensioned state, the nebulizer is in aloaded state, i.e. in a ready-to-discharge state, in particular in astate in which a dose of fluid is dispensed or discharged upon theactuation of a stop element). Preferably, the housing can only be openedif the nebulizer is in an untensioned state or discharged state. Thisallows or ensures secure handling and/or a defined position of thepreferably moveable container when opening the nebulizer and/orreplacing the container.

According to another aspect of the present invention, the nebulizercomprises preferably a blocking device, preferably the blocking devicementioned above, adapted to block indexing (i.e. the step-wise movement)of an indicator member, when the nebulizer or its energy store is in atensioned state. This allows or ensures easy and/or improved handlingand/or secure or defined indication of handling and state, in particularwhen the indicator member shows a required container replacement onlywhen the nebulizer or its energy store is not in a tensioned state, i.e.preferably after relaxing the energy store or a drive spring of thenebulizer.

Preferably, the indicator member shows numbers and/or symbols, inparticular indicating any required steps such as container replacement,closing of the housing, or the like.

Preferably, the blocking device controls blocking of opening of thehousing by means of the indicator member, in particular by blockingrequired indexing of the indicator member.

Preferably, the blocking device blocks indexing of the indicator memberin the tensioned state. The indicator member, in turn, blocks preferablyopening of the housing in the tensioned state. Thus, the blocking devicepreferably indirectly (in particular by means of the indicator memberand/or control member) controls or blocks opening of the housing and/orlocks the nebulizer or housing part selectively against opening.

Preferably, the nebulizer comprises a counter device for countingpressurizing and/or dispensing operations of the nebulizer and aguidance device which comprises the indicator member and/or controlmember. In particular, an actuation part of the counter devicecooperates with the guidance device when a predetermined number ofpressurizing and/or dispensing operations have been reached or exceededwith the current container. Thus, the guidance device can indicate arequired container replacement and/or enable the opening of the housingwhen a container has to be replaced.

The control of opening of the nebulizer via the indicator member allowsa simple integration of the blocking device and/or results in a welldefined indication of the necessary steps to a user and/or allows asecure handling for the user.

According to a further aspect of the present invention, the nebulizercomprises preferably an indicator device for indicating a tensionedstate of the nebulizer or its energy store. This allows visualization ofthe status (tensioned or not tensioned) and facilitates handling of thenebulizer.

According to another aspect of the present invention, the nebulizercomprises preferably a manually depressable actuator member at a housingpart, wherein the housing part is detachable together with the actuatormember from the housing of the nebulizer for replacing the containerwhen the actuator member is depressed. This facilitates the handling inparticular because the user can detach the housing part together withthe still depressed actuator member from the nebulizer and does not haveto leave the actuator member at the nebulizer.

Preferably, the actuator member is or forms a push button. This allowsvery easy and intuitive manual actuation.

The actuator member or push button acts preferably on a retainingelement arranged on or at the nebulizer non-detachable. Thus, thehousing part is detached from the retaining elements as well when thehousing part is detached from the nebulizer.

The retaining element forms preferably a catch or snap for preferablyautomatically holding or securing the housing part when it is shiftedonto or into the nebulizer, most preferably with two catch positions,i.e. a first catch position with partly closed housing part or housingof the nebulizer and a second catch position with completely closedhousing part or housing.

Preferably, the retaining element is blocked against release when theblocking device or indicator member blocks release of the retainingelement. In particular, the blocking device or indicator member mayblock the retaining element against depression and, thus, againstrelease (in this case, the retaining element cannot be depressed and,thus, the actuator member or push button can neither be depressed), inparticular when a predetermined number of doses of fluid have not yetbeen dispensed from the current container, the nebulizer is stilltensioned and/or a further container replacement is not allowed.

The above aspects of the present invention and the further aspectdescribed below can be realized independently from each other, and inany combination.

DESCRIPTION OF THE DRAWINGS

Further advantages, features, characteristics and aspects of the presentinvention will become apparent from the claims and the followingdescription of a preferred embodiment with reference to the drawings. Itshows:

FIG. 1 a schematic section of a known nebulizer in a non-tensionedstate;

FIG. 2 a schematic section, rotated 90° compared with FIG. 1 , of theknown nebulizer in a tensioned state;

FIG. 3 a schematic section of a nebulizer in a delivery state with apartly closed housing and with a pre-installed, closed container;

FIG. 4 a schematic section of the nebulizer according to FIG. 3 in anactivated, tensioned state with completely closed housing and withopened container;

FIG. 5 a schematic section of the nebulizer according to FIG. 4 in anon-tensioned state;

FIG. 6 a schematic perspective view of a nebulizer according to thepresent invention with a separate housing part shown with a partlycut-away portion, the housing part having a securing device holdingunmoveably a container of the nebulizer;

FIG. 7 a schematic section of the nebulizer according to FIG. 6 ;

FIG. 8 a schematic side view of the nebulizer according to FIG. 6 withpartly mounted housing part and with some cut-away portions, thecontainer being held unmoveably;

FIG. 9 a schematic section of the nebulizer according to FIG. 6 in thecompletely closed state with opened securing device so that thecontainer can move axially;

FIG. 10 a schematic section of the housing part with the associatedcontainer after use or separation from the nebulizer;

FIG. 11 a perspective view of an upper part of the nebulizer accordingto FIG. 6 without the housing part and with partly cut-away portions;

FIG. 12 a side view of a control/indicator member of the nebulizeraccording to FIG. 6 ;

FIG. 13 a perspective view of the control/indicator member according toFIG. 12 ;

FIG. 14 a perspective side view of a lock member of the nebulizeraccording to FIG. 6 ;

FIG. 15 another perspective view of the lock member according to FIG. 14;

FIG. 16 a partial schematic section of the nebulizer with a blockingdevice according to the present invention;

FIG. 17 a partial axial section of the area of FIG. 16 showing theblocking of an indicator member or control member by the blockingdevice;

FIG. 18 a perspective view of the blocking device;

FIG. 19 another perspective view of the blocking device;

FIG. 20 a schematic section of an upper part of the nebulizer with anindicator device according to the present invention in a first position;

FIG. 21 a schematic section similar to FIG. 20 with the indicator devicein a second position;

FIG. 22 a schematic section of the nebulizer according to the presentinvention with detached housing part comprising a depressable actuatormember;

FIG. 23 a schematic section of the nebulizer according to FIG. 22 withpartly attached housing part;

FIG. 24 a schematic section of the nebulizer according to FIG. 22 withcompletely attached housing part or completely housing; and

FIG. 25 a partial enlarged view of the encircled area of FIG. 24 .

DETAILED DESCRIPTION

In the Figures, the same reference numerals are used for identical orsimilar parts, resulting preferably in corresponding or comparableproperties and advantages, even if the associated description is notrepeated.

FIGS. 1 and 2 show a known nebulizer 1 for atomizing a fluid 2,particularly a highly effective pharmaceutical composition, medicamentor the like, diagrammatically shown in a non-tensioned state (FIG. 1 )and in a tensioned state (FIG. 2 ). The nebulizer 1 is constructed inparticular as a portable inhaler and preferably operates only mechanicaland/or without propellant gas.

When the fluid 2, preferably a liquid, more particularly apharmaceutical composition, is nebulized, an aerosol 14 (FIG. 1 ) isformed, which can be breathed in or inhaled by a user. Usually theinhaling is done at least once a day, more particularly several times aday, preferably at set intervals, depending on the complaint or illnessfrom which a patient is suffering.

The nebulizer 1 is provided with or comprises an insertable orreplaceable container 3 containing the fluid 2. The container 3 thusforms a reservoir for the fluid 2, which is to be nebulized. Preferably,the container 3 contains multiple doses of fluid 2 or active substancein particular sufficient to provide up to 200 dosage units or doses, forexample, i.e. to allow up to 200 sprays or applications. A typicalcontainer 3, as disclosed in WO 96/06011 A1, holds e.g. a volume ofabout 2 to 20 ml.

It has to be noted that the dose can vary, in particular depending onthe fluid 2 or medicament. The nebulizer 1 can be adapted respectively.

Further, the number of doses contained in the container 3 and/or thetotal volume of the fluid 2 contained in the container 3 can varydepending on the fluid 2 or respective medicament and/or depending onthe container 3 and/or depending on the necessary medication or thelike.

Preferably, the container 3 can be replaced or exchanged, wherein thenumber of containers 3, which can be used with the same nebulizer 1, ispreferably restricted, e.g. to a total number of four or five containers3.

The container 3 is preferably substantially cylindrical orcartridge-shaped and once the nebulizer 1 has been opened the container3 can be inserted therein preferably from below and changed if desired.It is preferably of rigid construction, the fluid 2 in particular beingheld in a collapsible bag 4 in the container 3. In particular, thecontainer 3 comprises a venting hole 31 which is opened before or duringfirst use.

The nebulizer 1 comprises a delivery mechanism, preferably a pressuregenerator 5, for conveying and nebulizing the fluid 2, particularly in apreset and optionally in an adjustable dosage amount. The nebulizer orpressure generator 5 comprises preferably a holder 6 for releasablyholding the container 3, a drive spring 7 associated to the holder 6,only partly shown, and/or a stop element 8 preferably in form of or witha button for preferably manual actuation or depressing, which stopelement 8 can catch and block the holder 6 and can be manually operatedto release the holder 6 allowing drive spring 7 to expand. The nebulizer1 or pressure generator 5 comprises preferably further a conveyingelement, such as a conveying tube 9, a non-return valve 10, a pressurechamber 11 and/or a nozzle 12 for nebulizing the fluid 2 into amouthpiece 13. The completely inserted container 3 is fixed or held inthe nebulizer 1 via the holder 6 such that the conveying tube 9penetrates into the container 3. The holder 6 is preferably constructedso that the container 3 can be exchanged.

When the drive spring 7 is axially tensioned in the tensioning processthe holder 6 with the container 3 and the conveying tube 9 are moveddownwards in the drawings and fluid 2 is sucked out of the container 3into the pressure chamber 11 of the pressure generator 5 through thenon-return valve 10. In this state, the holder 6 is caught by the stopelement 8 so that the drive spring 7 is kept compressed. Then, thenebulizer 1 is in the so-called loaded or tensioned state.

During the subsequent relaxation in the nebulization process afteractuation or pressing of the stop element 8 the fluid 2 in the pressurechamber 11 is put under pressure as the conveying tube 9 with its nowclosed non-return valve 10 is moved back in the pressure chamber 11,here in the drawings upwards, by the relaxation or force of the drivespring 7 and now acts as a pressing ram or piston. This pressure forcesthe fluid 2 through the nozzle 12, whereupon it is nebulized into theaerosol 14, as shown in FIG. 1 .

Generally, the nebulizer 1 operates with a spring pressure of 5 to 200MPa, preferably 10 to 100 MPa on the fluid 2, and/or with a volume offluid 2 delivered per stroke of 10 to 50 μl, preferably 10 to 20 μl,most preferably about 15 μl. The fluid 2 is converted into or nebulizedas aerosol 14, the droplets of which have an aerodynamic diameter of upto 20 μm, preferably 3 to 10 μm. Preferably, the generated jet spray hasan angle of 20° to 160°, preferably 80° to 100°. These values also applyto the nebulizer 1 according to the teaching of the present invention asparticularly preferred values.

A user or patient (not shown) can inhale the aerosol 14, preferablywhile an air supply can be sucked into the mouthpiece 13 through atleast one optional air supply opening 15.

Preferably, the drive spring 7 can be manually activated or tensioned(or the nebulizer 1 can be loaded), in particular by actuation of anactuation member.

The nebulizer 1 comprises preferably a housing or (upper) housing part16 and optionally a biasing or inner part 17 preferably which isrotatable relative thereto (FIG. 2 ) and/or having an upper part 17 aand a lower part 17 b (FIG. 1 ).

The nebulizer 1 comprises preferably an in particular manually operable(lower) housing part or cap 18 releasable fixed, particularly fitted orheld onto the inner part 17, preferably by means of a retaining element19.

Preferably, the housing parts 16 and 18 and/or other parts form ahousing of the nebulizer 1. In order to insert and/or replace thecontainer 3, preferably the housing can be opened and/or the housingpart 18 can be detached from the nebulizer 1 or its housing. Generallyand preferably, the container 3 can be inserted before the housing isclosed and/or before the housing part 18 is connected to the housing.Preferably, the container 3 is inserted, opened and/or fluidicallyconnected to the delivery mechanism automatically or simultaneously when(completely) connecting the housing part 18 to the housing/nebulizer 1and/or when (completely) closing the housing/nebulizer 1.

The actuation member, preferably the housing part 18, can be actuated,here rotated relative to the upper housing part 16, carrying with it ordriving the inner part 17. As a result the drive spring 7 is tensionedin the axial direction by means of a gear or transmission (not shown)formed between the inner part 17, in particular its upper part 17 a, andthe holder 6 and acting on the holder 6. During tensioning the container3 is moved axially downwards until the container 3 assumes an endposition as shown in FIG. 2 . In this activated or tensioned state thedrive spring 7 is under tension and can be caught or held by the stopelement 8. During the nebulizing process the container 3 is moved backinto its original position (non-tensioned position or state shown inFIG. 1 ) by the drive spring 7. Thus the container 3 executes a liftingor stroke movement during the tensioning process and during thenebulizing process.

The housing part 18 preferably forms a cap-like lower housing part andfits around or over a lower free end portion of the container 3. As thedrive spring 7 is tensioned the container 3 moves with its end portion(further) into the housing part 18 or towards the end face thereof,while an aeration means, such as an axially acting spring 20 arranged inthe housing part 18, comes in contact with base 21 of the container 3and pierces the container 3 or a base seal thereon with a piercingelement 22 when the container 3 makes contact with it for the firsttime, to allow air in or aeration.

The nebulizer 1 comprises preferably a counter device 23, which countsin particular actuations of the nebulizer 1, preferably by detecting itstensioning or the rotation of the inner part 17 relative to the upperpart 16 or housing. Preferably, the counter device 23 or an associatedlock locks the (further) actuation or use of the nebulizer 1, e.g.blocks further rotation of the housing part 18/inner part 17 and, thus,tensioning of the nebulizer 1 or its drive spring 7 and/or blocksactuation of the stop element 8, when a certain number of actuations oroperations or discharged doses has been reached or exceeded.

A preferred construction and mode of operation of the inhaler ornebulizer 1 will now be described in more detail with reference to FIGS.3 to 5 , but emphasizing only essential differences from the nebulizer 1according to FIGS. 1 and 2 . The remarks relating to FIGS. 1 and 2 thusapply preferably accordingly or in a similar manner, while any desiredcombinations of features of the nebulizer 1 according to FIGS. 1 and 2and the nebulizer 1 described below are possible.

Preferably, the container 3 is pre-installed. This can be realized inparticular as shown in WO 2006/125577 A2 or as described in thefollowing.

FIG. 3 shows the nebulizer 1 in a delivery state with preferablypre-installed container 3, which is still closed. In this state, thehousing of the nebulizer 1 is not completely closed, in particular thehousing part 18 is not completely pushed on the inner part 17. FIGS. 4and 5 show the nebulizer 1 in an activated state with the housingcompletely closed and with the container 3 opened. In FIG. 4 , thenebulizer 1 or drive spring 7 is tensioned, i.e. the container 3 is inits lower position. FIG. 5 shows the nebulizer 1 in a non-tensionedstate, e.g. after dispensing or nebulizing of one dose of the fluid 2;the container 3 is in its upper position.

The container 3 comprises a fluid outlet 24 for outputting the fluid 2to be dispensed. In particular, the fluid outlet 24 allows a fluidicconnection between the container 3 or its bag 4 on one hand and thenebulizer 1, its pressure generator 5 or the conveying element on theother hand.

The fluid outlet 24 has an inner closure 25 that is preferably formed bya septum, a membrane, a plastic seal or the like and/or is providedinside the container 3. Optionally, a second or outer closure 26 can beprovided such that successive opening is possible by means of one commonelement, in particular the conveying element or conveying tube 9 or thelike, and/or by piercing.

Preferably, the first or inner closure 25 is formed or supported by aclosure part 27 extending from the outlet or head end of the container 3into the container 3 or bag 4. The second or outer closure 26 ispreferably located adjacent to the head or axial end of the container 3and/or held or connected to a flange 28, which can be formed by theclosure part 27 or any other suitable part. However, otherconstructional solutions are possible.

In the delivery state according to FIG. 3 , the container 3 has beenpre-installed, i.e. inserted into the nebulizer 1. However, thecontainer 3 or its fluid outlet 24 is not yet opened. In particular, thesecond closure 26 is already opened, but not the first closure 25. Thisis achieved in particular in that the housing of the nebulizer 1 isclosed only partly, i.e. not completely, in the delivery state.

In particular, the container 3 is attached to or held by or secured inthe housing part 18, in particular by a transportation lock 29, which ispreferably arranged within or at the housing part 18. The transportationlock 29 holds the container 3 preferably temporarily, in particularbefore attaching the housing part 18 to the nebulizer 1 and/or in thedelivery state. In particular, the transportation lock 29 holds thecontainer 3 fixed during the fluidic connection of container 3 and/orduring the mechanic connection of container 3, here with holder 6.Preferably, the transportation lock 29 holds the container 3 fixedduring opening, in particular piercing, the container 3.

In the delivery state, in which the nebulizer 1 can be shipped ordelivered to the user or is still packed, the nebulizer 1 or the housingpart 18 is preferably secured, in particular by means of a securingmember 30, e.g. a banderole, such that the container 3 and/or housingpart 18 are held sufficiently spaced from the nebulizer 1 or upperhousing part 16 and/or prevented from being completely closed orcompletely inserted or pushed on the conveying element or tube 9, thehousing or inner housing part 17 or the like and/or such that (complete)opening of the container 3, namely of the first closure 25, isprevented.

Once the security member 30 has been removed a user (not shown) can pushthe housing part 18 fully on in the axial direction and thereby open thecontainer 3, i.e. first closure 25, by inserting the conveying elementor conveying tube 9. FIGS. 4 and 5 show this activated state with thehousing part 18 pushed fully on and/or the container 3 open (fluidicallyconnected to the nebulizer 1 or its pressure generator 5 or theconveying element or tube 9).

FIG. 4 shows the nebulizer 1 or container 3 in the activated state, thecontainer 3, i.e. first closure 25, is open, i.e. the container 3 or itsfluid 2 is fluidically connected to the nebulizer 1 or its pressuregenerator 5, and the housing part 18 has been pushed fully on in theaxial direction. In order to bring the holder 6 into (complete)engagement with the container 3 at the head end and then be able to movethe container 3 back and/or forth for the suction/tensioning andpressing strokes, it may be necessary to tension the nebulizer 1 or itdrive spring 7 for the first time. During this tensioning process theholder 6 is moved together with the conveying tube 9 axially towards orinto the housing part 18, thus bringing the holder 6 into (complete)engagement with the container 3 and preferably also moving or pressingthe container 3 against the piercing element 22 in the region of thebase of the housing part 18 and thereby piercing or opening a ventinghole 31 in the container base 21. FIG. 4 shows the nebulizer 1 in thistensioned and activated state. The holder 6 is engaged with thecontainer 3 and the conveying tube 9 has been fully inserted into thecontainer 3.

FIG. 5 shows the nebulizer 1 in the relaxed, non-tensioned state, i.e.after atomization or discharge of a dose of the fluid 2. The holder 6and the container 3 are in the upper position. The holder 6 is stillengaged with the container 3 and remains engaged during the further usesof the nebulizer 1. Further, the container 3 is still open andfluidically connected, i.e. the nebulizer 1 remains activated.

To prevent unwanted opening of the container 3, particularly of thefirst closure 25, in the delivery state of the nebulizer 1, and/or toprevent (axial) movement of the container 3 relative to the associatedhousing part 18 before complete closing of the nebulizer 1, preferablythe transportation lock 29 is provided. By frictional, forcible orinterlocking engagement, for example, the transportation lock 29prevents the container 3 from undesirably moving axially.

Preferably, the opening of the transportation lock 29 occursautomatically when closing the nebulizer 1 or its housing completely,i.e. when snapping or pushing on the housing part 18 completely towardsthe upper housing part 16. During this (preferably linear, axial ortelescopic) closing movement, the transportation lock 29 is opened andthe container 3 released in axial direction preferably during or afterpiercing or opening the container 3 and/or preferably during only a lastpart of the movement and/or just little before the final completelyclosed position is reached or just when the final completely closedposition is reached.

During the closing movement in which preferably parts 17 and 18 arejoined, the transportation lock 29 is preferably opened by the direct orindirect interaction with or actuation by the housing of the nebulizer1, the inner part 17 or its lower part 17 b or the like. Preferably, thecontainer 3 and/or first closure 25 are opened as well as thetransportation lock 29 by means of a common actuation and/or component,here the closing movement of the nebulizer 1 or its housing or bottompart 18.

FIGS. 4 and 5 show the transportation lock 29 in the open position, i.e.wherein the container 3 is free to move axially.

In the following, a preferred embodiment of the nebulizer 1 according tothe present invention will be described in more detail with reference tothe further Figures, wherein only essential differences from thenebulizer 1 described above or shown in FIGS. 1 to 5 will be emphasizedor described. Thus, the remarks relating to FIGS. 1 to 5 applypreferably accordingly or in a similar manner, while any desiredcombinations of features are possible.

FIG. 6 shows the nebulizer 1 in a perspective side view with not yetmounted, i.e. separated (lower) housing part 18 (partly cut open forillustration purposes) with associated container 3. The container 3 hasnot been inserted or pre-installed in the nebulizer 1 yet. With otherwords, the nebulizer 1 has not been assembled yet or is not in thepreferred delivery state yet.

FIG. 7 shows the nebulizer 1 in a schematic section as well as thecontainer 3 and housing part 18 which are still separated from the(upper part of the) nebulizer 1.

The nebulizer 1 or its housing or housing part 18 comprises preferably asecuring device 32 which may have different functions. The securingdevice 32 may hold the container 3 such that the container 3 is moveableback and forth within the completely closed housing for conveying thefluid 2, pressure generation and/or nebulization, wherein the securingdevice 32 may ensure that the container 3 is inseparable from thehousing or housing part 18. Thus, only complete replacement of thehousing part 18 together with the respective container 3 is possible.Alternatively or additionally, the securing device 32 may form thetransportation lock 29. Alternatively or additionally, the securingdevice 32 may prevent that the used container 3 and/or used housing part18 can be (re)connected to or used with the nebulizer 1 once more.

When the securing device 32 or transportation lock 29 is closed, thecontainer 3 is held or counter-beared for opening by inserting theconveying element or tube 9, preferably wherein a press-fit is formedbetween the conveying element or tube 9 and the container 3 or closurepart 27, and/or for (completely) connecting the container (head) to theholder 6. With other words, the transportation lock 29 or securingdevice 32 form preferably a counter-bearing for the container 3 duringclosing of the nebulizer 1.

When the securing device 32 or transportation lock 29 is closed, thecontainer 3 is held spaced from the piercing element 22.

The securing device 32 is preferably located or arranged or fixed at orin the housing part 18 as shown in FIGS. 6 and 7 .

Preferably, the securing device 32 comprises or consists of a metaland/or stamped part and/or consists of a single, unitary part. Thesecuring device 32 may consist of two or more parts, preferablyconnected by means of gluing, crimping, riveting, welding, or the like.

Preferably, the securing device 32 is made of steel, in particularspring steel. Preferably, the securing device 32 is produced from sheetmaterial by cutting, stamping or the like and/or by bending. Preferably,the securing device 32 or a part thereof forms a cage, in particularencompassing the container 3 or an end portion thereof, in particularthe container base 21.

Preferably, the securing device 32 comprises holding elements 33 and/orlocking elements 34. The elements 33 and/or 34 are preferably designedlike arms, fingers, leaves or the like. In particular, the elements 33and 34 are alternately distributed over the circumference of thecontainer 3. Preferably, the securing device 32 comprises multipleholding elements 33 and multiple locking elements 34, in particularthree or more holding elements 33 and three or more locking elements 34.Preferably, the elements 33 and 34 extend at least essentially axiallyand/or in the direction of the back and forth movement of the container3 and/or in the direction of the longitudinal or main extension of thenebulizer 1 or main dispensing direction of the aerosol 14.

Preferably, the elements 33 and 34 are held by or connected with a base35 of the securing device 32, as shown in FIG. 8 . FIG. 8 shows thenebulizer 1 in a schematic side view with already partly mounted housingpart 18 and with some cut-away portions. The transportation lock 29 orsecuring device 32 is still closed or locked, i.e. the container 3 isstill securely held so that it cannot axially move (axially means in thedirection of the back and forth or stroke movements).

Preferably, the securing device 32 or base 35 comprises or holds thepiercing element 22 for piercing the container 3, i.e. opening thecontainer base 21 or its venting hole 31 or a respective sealing of thecontainer 3 or the like in the activated and tensioned state, i.e. whenthe container 3 reaches its lower end position. In the shown andpreferred embodiment, the piercing element 22 is formed by a respectivebending of a spring portion 36 of the securing device 32 or its base 35.The spring portion 36 can support or facilitate the (complete or final)connection of the container 3 to the holder 6.

The securing device 32 or base 35 comprises preferably at least one ormultiple fixing portions 37 for fixing the securing device 32 at or inthe nebulizer 1 or housing or housing part 18. In particular, the fixingportions 37 may fix the securing device 32 when it is pressed into thehousing part 18 by cooperating with the sidewall of the housing part 18.However, it is also possible to overmold the securing device 32, itsbase 35, the fixing portions 37 or the like. Moreover, the securingdevice 32 could be connected with the housing part 18 or the like in anyother suitable manner, in particular, by a separate fixing member, bygluing or the like.

As already mentioned, the securing device 32 preferably forms thetransportation lock 29 for holding the container 3 unmovable in thehousing or housing part 18 in the delivery state of the nebulizer and/orbefore attaching the housing part 18 to the nebulizer 1. In thissituation (in particular in the delivery state), the container 3 or apreferably radially protruding and/or circumferentially extending partor edge 38 thereof, preferably formed at the container base 21, is heldpreferably in a form-fit manner and/or between the holding elements 33and locking elements 34, in particular between respectively formed orbent end portions 33 a and 34 a of the elements 33 and 34, respectively,as shown in FIGS. 6 to 8 .

In the shown embodiment, the container 3 and/or edge 38 is caughtbetween the end portions 33 a and 34 a, preferably alternatively. Theholding elements 33 and/or end portions 33 a grip or extend over theedge 38, and the locking elements 34 or its end portions 34 a grip orextend under the edge 38, so that the edge 38 and container 3 aresecurely held in between, in particular by form-fit, preventing anyaxial movement of the container 3 relative to the securing device 32 andrelative to the associated housing part 18 in this state or deliverystate, i.e. with locked transportation lock 29/securing device 32.

Preferably, the end portions 33 a and/or 34 a are formed like claws orthe like and/or extend preferably radially inwardly.

Preferably, the elements 33 and/or 34 can flex with its free endsradially outwardly.

Preferably, the securing device 32 is designed such that the associatedcontainer 3 can be connected with the securing device 32 by a respectiveaxial force or movement, wherein the elements 33 and/or 34 flexpreferably automatically outwardly as required to receive the container3 in the locked position as shown in FIGS. 6 to 8 . However, ifnecessary, a suitable tool (not shown) or the like could be usedalternatively or additionally for assembly if necessary.

For example, the ends of the end portions 33 a could be inclined suchthat the container 3 may be inserted into or connected with the securingdevice 32 by a respective axial movement so that the holding elements 33flex outwardly to allow passing of edge 38.

Preferably, the holding elements 33 or its end portions 33 a preventseparation of the container 3 from the securing device 32 and, thus,from the associated housing part 18 or the like.

In the present embodiment, the holding elements 33 extend preferablyabove the end portions 33 a and/or form or comprise preferably arm-likeguiding and/or locking portions 33 b. These axial extensions and/orthese portions 33 b extend axially beyond the end portions 33 a and/ormay cooperate with the container 3 or its edge 38 during axial assemblyof the container 3 with the securing device 32 such that the holdingelements 33 are flexed sufficiently outwardly so that the edge 38 canpass the end portions 33 a and the container base 21 can be seated onthe end portions 34 a of the locking elements 34.

The locking elements 34 preferably comprise actuation portions 34 b atits free ends extending axially beyond the end portions 34 a. Theactuation portions 34 b may radially guide the container 3 and/orfacilitate insertion of the container 3 or its edge 38 between the freeends of the locking elements 34 although the locking elements 34 arepreferably radially inwardly biased as well as the holding elements 33.

When, the container 3 is held with its edge 38 between the end portions33 a and 34 a, the transportation lock 29/securing device 32 is closed,i.e. the container 3 cannot move axially within the housing part 18 ornebulizer 1.

For opening the transportation lock 29 or securing device 32, thelocking elements 34 and/or its end portions 34 a are flexed preferablyradially outwardly so that the container 3 can freely move axially, inparticular restricted such that the edge 38 can only move axially withinthe securing device 32 and/or that the axial movement is restricted (inthe drawings upwardly) by the holding elements 33 or its end portions 33b and/or such that the container 3 cannot be separated from the securingdevice 32. This opening of the transportation lock 29 or securing device32 will take place when activating the nebulizer 1, when using thenebulizer 1 for the first time and/or when completely closing thenebulizer 1. Then, the container 3 can axially move, in particular backand forth and/or with its edge 38 between the end portions 33 a and thepiercing element 22 in the present embodiment. This situation isschematically shown in the schematic section according to FIG. 9 whichshows the nebulization with closed housing or housing part 18 and withopened transportation lock 29/securing device 32.

In FIG. 9 , the container 3 is shown in its lower position similar toFIG. 4 , in particular, wherein the container base 21 is in contact withthe piercing element 32. However, the nebulizer 1 is not shown in thetensioned state, i.e. the holder 6 is not in its lower position, i.e.the holder 6 is not yet connected with the upper end or head of thecontainer 3. Normally, the holder 6 would be connected to the container3 in this situation with the container 3 in the lower position. Withother words, usually the nebulizer 1 or drive spring 7 would betensioned in the situation with the container 3 being in the lowerposition.

Preferably, the container is finally or completely or correctlyconnected to holder 6 when tensioning the nebulizer 1 or its drivespring 7 for the first time after completely closing the nebulizer 1.However, it is generally also possible that the nebulizer 1 is in thetensioned state, i.e. the drive spring 7 is already tensioned and theholder 6 is in the lower position, before or during (first) assemblywith lower housing part 18. Consequently, the holder 6 should directlyconnect with the container 3 when completely closing the housing part18, and the situation shown in FIG. 9 should normally not occur.

In FIG. 9 , the end portions 34 a are moved radially outwardly in orderto open the transportation lock 29 or securing device 32. This isachieved preferably by flexing the locking elements 34 radiallyoutwardly. This can be achieved in particular by acting on the actuationportions 34 b.

Preferably, the transportation lock 29 is opened or the locking elements34 are flexed outwardly when completely closing the nebulizer 1 or itshousing part 18, in particular by cooperation with or abutment of theinner part 17, its lower part 17 b, a retaining part 39 and/or asecuring part 40. The retaining part 39 is preferably arranged at theupper housing part 16 or inner part 17. The securing part 40 ispreferably arranged in the lower housing part 18.

The retaining part 39 is connected to the lower or free end of the innerpart 17 or its lower part 17 b in order to hold, bear or support an end(the lower end) of the drive spring 7. FIGS. 3 to 5 show a preferredconstruction of the retaining part 39. It is preferably formed as a ringand/or provided with hooks or the like for interconnection with theinner part 17. In the preferred embodiment, the retaining element 19forms a unitary component or portion of the retaining part 39. However,other constructional solutions are possible.

In the embodiment shown in FIGS. 3 to 5 , a preferably ring-likesecuring part 40 opens the transportation lock 29, in particularflexible arms of the transportation lock 29, to allow axial movement ofthe container 3. This securing part 40 keeps the transportation lock 29or its flexible arms open when the nebulizer 1 or its housing part 18has been completely closed. The securing part 40 is pushed axiallydownwards by abutment of the inner part 17 or retaining part 39 withinthe housing part 18 when completely closing the nebulizer 1.

In the preferred embodiment shown in FIGS. 6 to 15 and particular inFIG. 9 , the nebulizer 1, housing part 18 or securing device 32comprises the preferably ring-like securing part 40 for opening thetransportation lock 29/securing device 32 or its locking elements 34. Inparticular, the securing part 40 is pushed axially downwards whenclosing the nebulizer 1 so that it is moved between the locking elements34 or its actuation portions 34 b and exerts an axial force radiallyoutwards. Preferably, an inclined plane converts the axial or closingmovement into an opening or radial movement which forces the actuationportions 34 b radially outwardly when the securing part 40 is forcedaxially downwardly, here by abutment of the retaining part 39, inparticular in the axial end position shown in FIG. 9 .

Preferably, the securing part 40 and/or locking elements 34 or actuationportions 34 b comprise a respectively inclined guiding surface 41 or thelike to convert the axial closing movement or movement of the securingpart 40 into the desired radial opening movement of the locking elements34 or actuation portions 34 b and, thus, of the end portions 34 a toopen the transportation lock 29, in particular when the housing has beencompletely closed or when the housing part 18 has been pushed completelyon the nebulizer 1.

However, other constructional solutions are possible to realize openingof the transportation lock 29 or securing device 32 or its lockingelements 34 or end portions 34 a when closing the nebulizer 1 or itshousing parts 18.

In the preferred embodiment the securing part 40 serves alternatively oradditionally another purpose. Namely, the securing part 40 prevents thelocking portions 33 b from moving radially apart or flexing radiallyoutwards before the nebulizer 1 is assembled with its housing part 18for the first time.

As already mentioned, the securing device 32 prevents preferably that acontainer 3 can be connected to or used with the nebulizer 1 once more.In particular, the securing device 32 can prevent that a used housingpart 18 or used container 3 can be reconnected to the nebulizer 1 onceit has been detached from the nebulizer 1. Thus, the securing device 32prevents any undesired reuse of the container 3 and/or housing part 18with its preferably inseparable container 3.

In the present embodiment, the undesired reuse is prevented in that thelocking portions 33 b force apart or move apart or radially and/oroutwards at least after the used container 3 and/or housing part 18 hasbeen detached from the nebulizer 1 such that the used container 3 and/orhousing part 18 cannot be connected to or used with the nebulizer 1 oncemore. Preferably, the locking portions 33 b are biased such that thelocking portions 33 b force apart or move radially and/or outwards afterrelease.

In the preferred embodiment, the locking portions 33 b are held togetheror held against moving apart, radially and/or outwards by the securingpart 40 (schematically indicated in FIG. 7 ) before the container 3 andthe associated housing part 18 have been connected to the nebulizer 1for the first time. In this pre-assembly state, the securing part 40 islocated preferably near the free ends of the locking portions 33 band/or it encompasses that locking portions 33 b such that lockingportions 33 b are held sufficiently close together to be inserted withits free ends within the retaining part 39 and/or drive spring 7 whenpushing the housing part 18 axially onto the nebulizer 1 or its innerpart 17, in particular lower part 17 b.

The securing part 40 may cooperate with the locking portions 33 b orprotrusions 33 c thereof (shown in FIG. 9 ) preferably such that thesecuring part 40 is held by a preferably radial engagement and/orfrictional force in its (upper) position holding the locking portions 33b or holding elements 33 together in the pre-assembly state. Laterduring assembly, in particular during complete closing of the housing orpushing on the housing part 18, the locking portions 33 b are moved intothe retaining part 39 and drive spring 7, while the securing part 40 ismoved axially downwards or towards the securing device 32, the containerbase 21 and/or bottom part of the end of the housing part 18. Then, theend position or completely assembled position is reached as shown inFIG. 9 . In this state, the radially biased locking portions 33 b areheld together by the drive spring 7 as the securing part 40 does nothold the locking portions 33 b together any more.

Preferably, the securing part 40 has opened the transportation lock 29or locking elements 34 in the last part of the closing movement or justwhen completely closing the nebulizer 1 as already mentioned.

The schematic section of FIG. 10 shows the housing part 18 together withits associated container 3 after it has been used and separated from thenebulizer 1. The securing part 40 remains preferably in its lowerposition. The transportation lock 29 is (still) open. The container 3 isshown in its upper position where it is held by the end portions 33 a ofthe holding elements 33 when detaching the container 3 from thenebulizer 1, in particular from the holder 6 and the conveying elementor tube 9.

FIG. 10 shows that the locking portions 33 b have been forced apart, inparticular due to its biasing or elastic force, here moved radiallyoutwardly with its free ends in particular due to its preferably radialbiasing or elastic force. This forced apart position of the lockingportions 33 b blocks reconnection of the container 3 and/or housing part18 and/or securing device 32 with the nebulizer 1. Thus, the alreadyused container 3 cannot be reused. Thus, misuse of the container 3 ornebulizer 1 can be prevented.

The securing part 40 may additionally secure the holding elements 33 orits end portions 33 a against radial opening when the securing part 40is in its lower position as shown in FIGS. 9 and 10 . In this case, thesecuring part 40 contacts the holding elements 33 preferably on theouter side to prevent or restrict any outward flexing. Thus, thesecuring device 32 or its holding elements 33 or end portions 33 a aresecured against opening so that the container 3 or its edge 38 issecurely held within the securing device 32 or the cage formed by thesecuring device 32 or holding elements 33.

In the preferred embodiment, the counter device 23 is arrangedpreferably at the housing part 18 as schematically shown in FIGS. 7 to10 .

The counter device 23 counts the actuations or operations of thenebulizer 1 or the discharged doses, preferably for the respectivecontainer 3.

Preferably, the counter device 23 counts actuations or operations bydetecting the rotation of the inner part 17 relative to the upper part16 of the housing. With other words, the counter device 23 may count thetensioning the nebulizer 1 or its drive spring 7. However, otherconstructional solutions are possible.

Preferably, the counter device 23 comprises a threaded spindle or shaft42 with an associated, preferably unitary formed drive gear 43. Thecounter device 23 comprises preferably further a rider 44 associated tothe threaded shaft 42 and cooperating with the threaded shaft 42 suchthat the rider 44 is axially moved along the threaded shaft 42 as theshaft 42 is rotated.

The threaded shaft 42 is rotatable beared preferably in the lowerhousing part 18 and/or extents preferably parallel to the axial orlongitudinal direction of the nebulizer 1 and/or to the axial or strokemovement of the container 3.

The drive gear 43 is located preferably at an upper end of the threadedshaft 42 and/or housing part 18, in particular such that it can meshwith a preferably inner toothing 45 of the housing or upper housing part16 of the nebulizer 1 in the assembled state, i.e. when the housing ofthe nebulizer 1 is completely closed, as schematically shown in FIG. 9 .

The counter device 23 or its rider 44, in particular the axial positionof the rider 44 along the threaded shaft 42, may show or indicate thenumber of operations, in particular of tensioning, actuations or doses,which have already been performed or used with the current container 3or which can still be performed with the current container 3. Thisoperation number can in particularly been shown by a pointer 46 and/oran associated scale or the like which are visible reasonable through acorresponding window or transparent part of the housing part 18. It hasto be noted that the number has not be shown precisely. In particular,it may be sufficient that the counter device 23, the rider 44 or itspointer 46 give a rough indication of the number. For this purpose, itmay be sufficient if the scale shows only different colored areas orregions roughly indicating said number. Further, it has to be noted thatother constructional solutions are possible as well.

The counter device 23 works preferably mechanically. This allows a verysimple and robust construction and a very secure operation.

The counter device 23 may control or provide preferably locking of thenebulizer 1, indicating any required container replacement and/orcontainer counting. For this purpose, the monitoring 23 or the rider 44comprises preferably an actuation part 47 as schematically shown in FIG.8 . The actuation part 47 is preferably ridge-like and/or extending inaxial direction and/or towards the upper housing part 16 and/or upwards.

The counter device 23 is associated to the respective housing part 18and, thus, preferably to only one container 3 and counts operations ofthe nebulizer 1 with the respective container 3, i.e. counts (only) thenumber of doses of fluid 2 removed or still removable from thiscontainer 3.

It has to be noted that the first container 3 may be pre-installedtogether with the associated housing part 18 in the delivery state. Thispre-installment is optional. Preferably, further separate containers 3are delivered together with the nebulizer 1, wherein each container 3 isinseparably connected with an associated housing part 18 and, thus, withan associated counter device 23. Preferably, the counter device 23 orthreaded shaft 42 of each housing part 18 is designed or provided withinhibition or brake means, such that any undesired counting or rotationis prevented before the respective housing part 18 is mounted to thenebulizer 1.

The nebulizer 1 comprises preferably a device 48 for counting the numberof containers 3 that have been used or still can be used with thenebulizer 1 and/or for indicating or displaying said container numbersand/or symbols indicating container replacement and/or end of use. Thisdevice 48 is preferably for monitoring and/or user guidance.

Preferably, said numbers and/or symbols are visible or shown through atransparent part or window 49 of the nebulizer 1, in particular locatedin the upper housing part 16 as schematically indicated in FIG. 6 . Inparticular, said numbers and/or symbols are shown at a side face of thenebulizer 1. Other arrangements or constructional solutions arepossible.

FIG. 11 shows the nebulizer 1 without lower housing part 18 and withoutcontainer 3 in a schematic side view, wherein parts of the upper housingpart 16 have been cut-away so that the monitoring or guidance device 48of the nebulizer 1 is better visible.

The nebulizer 1 or device 48 comprises preferably a member 50 forindicating or displaying said container number, symbols, a status,and/or user instructions, e.g. relating to container replacement, and/orfor controlling locking of the nebulizer 1. Thus, the member 50 is alsocalled indicator member and/or control member. Preferably, bothfunctions are achieved by the same or one single member 50. However, itis also possible that the indicator member and the control member areformed by separate parts or multiple parts. Preferably, the followingdescription shall be understood in such a broad sense.

Preferably, the nebulizer 1 or device 48 comprises a spring 51 fordriving or moving, in particular rotating, the member 50. This spring 51is shown in FIGS. 7, 8, 9 and 11 . Preferably, the member 50 is drivenor rotated—in particular in multiple steps and/or from an initial(rotational) position to a final (rotational) position—only by springforce or by means of the spring 51.

The spring 51 is preferably a helical, sleeve-like, ring-like and/ortorsional spring and/or a leg spring. It is preferably located coaxiallywith and/or adjacent to the driven member 50.

The spring 51 is preferably mounted in a biased state so that it appliesa rotational force to the member 50. For this purpose, the spring 51 issupported with one end or leg at the nebulizer 1, in particular at theupper housing part 16, and engages with its other end or leg with member50, e.g. by abutting a respective shoulder or bearing portion 67 (shownin FIGS. 12 and 13 ) of the member 50 or the like.

FIG. 12 shows a preferred embodiment of the member 50 in a schematicside view. FIG. 13 shows the member 50 in a perspective view.

The member 50 is preferably formed by a unitary and/or molded part. Themember 50 is preferably at least essentially ring-like and forms orcomprises a preferably closed ring.

The member 50 comprises or is provided with numbers 52 indicating saidcontainer number, and/or with said symbols 53 for user guidance, inparticular for indicating container replacement and/or end of use of thenebulizer 1. Preferably, the numbers 52 and symbols 53 are shown and/orarranged on the member 50 such that one or more numbers 52 and one ormore symbols 53 alternate. In particular, between preferably consecutivenumbers 52 one or more symbols 53 are arranged and/or shown such thatthese symbols 53 indicate e.g. necessary container replacement, openingof the nebulizer 1, closing of the nebulizer 1 or the like. This may becommunicated or indicated by respective arrows, colors, marks or thelike as symbols 53. Further, the last symbol 53 may indicate end of useof the nebulizer 1 or complete locking of the nebulizer 1, e.g. by an“X” or the like. This symbol 53 may be shown for example when theallowable number of operations or actuations of the nebulizer 1 havebeen reached or exceeded of the last container 3 that may be used withor in the nebulizer 1, i.e. indicating total or final locking of thenebulizer 1. In the present embodiment, preferably a sequence of atleast two different symbols 53 is shown between different or consecutivenumbers 52. This sequence of symbols 53 comprises preferably a firstsymbol 53 (e.g. arrow downwards) indicating opening of the nebulizer 1for container replacement and a second symbol 53 (e.g. arrow upwards)indicating closure of the nebulizer 1 for completing containerreplacement. However, it is also possible to show only one, potentiallysimilar or identical symbol 53 between the different or consecutivenumbers 52, such as one symbol 53 indicating container replacement.Preferably, only one special or end symbol 53, such as “X”, is shown atthe end when the allowable number of operations or actuations of thenebulizer 1 has been reached or exceeded for the last container 3 and/orwhen the nebulizer 1 is finally blocked and/or when no further container3 can be inserted.

The member 50 comprises preferably engagement or stop portions 54 whichare preferably formed by radial protrusions or the like in the presentembodiment. The stop positions 54 are used preferably to allow orrealize a stepwise movement or rotation (indexing) of the member 50.

The member 50 comprises further preferably blocking portions 55 whichextend preferably axially and/or cooperate with the retaining element 19to selectively lock the nebulizer 1 or housing part 18 against opening,in particular by selectively blocking the retaining element 19 againstdepressing or radial inward movement.

The member 50 comprises preferably control portions 56 for controllingor driving an associated lock 57 of the nebulizer 1. The controlportions 56 are formed preferably by protrusions or indentions orinclined guiding surfaces or the like which preferably extend radiallyand/or which are preferably formed on an outer circumference of themember 50 or its ring portion. However, other arrangements are possibleas well.

The lock 57 is preferably formed by a locking member 58 or a portion 59thereof, which is preferably tongue-like, leaf-like and/or flexible.FIG. 14 shows in a perspective view the locking member 58. FIG. 15 showsin other perspective view the locking member 58.

The locking member 58 is preferably made of metal and/or formed by platematerial and/or a stamped part or the like. The locking member 58 ispreferably ring-like and/or sleeve-like.

The portion 59 is preferably bent or indented or provided with such aform, in particular in radial direction and/or provided with a crimp,corrugation 60 or the like, for cooperating with the member 50 and/or atleast one or more or all of the control portions 56, in particular suchthat depending on the rotational movement or position of the member 50the portion 59 is radially flexed, in particular outwards, or not. Forexample, the control portions 56 are indented or recessed so that aportion 59 is not flexed radially outwards if the respective corrugation60, which extends radially inwards from the respective portion 59, isreceived in a portion 56 located adjacent to this corrugation 60 on theinner side. If the member 50 is in another rotational portion, thecorrugation 60 may abut on the non-recessed outer periphery of member 50so that the respective portion 59 is flexed outwards and the lock 57 isclosed. Thus, the lock 57 is driven or controlled, namely closed andopened, by means of the control member 50, in particular depending onits rotational position.

As already mentioned, the device 48 or member 50 is preferably driven byspring force, in the present embodiment by the force of spring 51. Inparticular, the member 50 is rotated or indexed stepwise by means of theforce of the spring 51, wherein a ratchet or stop mechanism is providedto ensure the only stepwise moving or rotating of the member 50. Inparticular, stop means engage with the stop portions 54 of the member50. In the present embodiment, the mechanism or stop means arepreferably formed by one or two stop elements 61. The stop elements 61are preferably formed like arms and/or by the locking member 58. Thestop elements 61 are preferably elastically flexible to selectivelyallow a stop portion 54 to pass, i.e. to selectively allow the member 50to index one step further, or to block a stop portion 54 and, thus,member 50 against further rotation. Preferably, the stop elements 61 arebiased into a stopping position such that each stop element 61 extendsinto the way of movement of the stop portions 24 such that no stopportion 54 can pass the respective stop element 61.

Preferably, at least two stop elements 61 are provided and preferablyoffset such that stop elements 61 can be actuated alternatively to allowthe member 50 to index or move further by one step, i.e. by onerotational movement or increment when the stop elements 61 arealternatively actuated, e.g. flexed, in particular in axial and/orradial direction, to allow one stop portion 54 to pass. The stopelements 61 are preferably flexed upwards to allow the respective stopportion 54 to pass. The actuation of the stop elements 61 will beexplained in more detail below.

The stop elements 61 or its free ends may be provided with a broadenedabutment or engagement body or surface, in particular by respectivelybending the element or arm 61, by overmolding or the like. Each stopelement 61 may be provided with a contact element 61 a as schematicallyshown in FIG. 8 . The contact element 61 a may be formed by overmoldingand/or may be shoe-like. The contact element 61 a may form a stop orabutment for the stop portions 54 such that the member 50 is blockedagainst further rotation by force of spring 51 when the stop element 61or contact element 61 a is in the blocking position, here in the lowerposition shown in FIG. 8 where one stop portion 54 abuts the contactelement 61 a and cannot pass in circumferential direction. Here, thestop element 61 or contact element 61 a has to be moved upwards oraxially so that the blocked stop portion 51 can pass and the member 50can index one step further in circumferential direction.

In the following, the operation and handling of the nebulizer 1 will beexplained in more detail.

The nebulizer 1 may be delivered with a pre-installed container 3 andpre-attached housing part 18. In this case, the nebulizer 1 or itshousing part 18 is not completely closed so that the container 3 is notyet fluidically connected or opened.

Alternatively the nebulizer 1 may be delivered with a separate container3 and housing part 18. In this case the container 3 and the housing part18 are preferably pre-assembled, i.e. form a unit that is separate fromthe nebulizer 1.

In any case, the nebulizer 1 is preferably delivered together withmultiple containers 3, e.g. four or five containers 3, wherein eachcontainer 3 is inseparably connected to an associated housing part 18.These units of containers 3 and housing parts 18 can be exchanged sothat the nebulizer 1 can be used with multiple containers 3 one afterthe other.

In both cases, the container 3 is preferably held unmoveably at orwithin the housing part 18 by the closed transportation lock 29 orsecuring device 39.

In both cases, the housing part 18 comprises preferably a coding, e.g.by one or more grooves, protrusions, ribs 62 or the like distributedaround the inner circumference of the housing part 18 and/or axiallyextending, as schematically indicated in FIG. 10 . This codingcorresponds to the container 3 or the respective fluid 2 associated tothe housing part 18. The coding matches to a complementary coding at thenebulizer 1, in particular at the inner part 17 or retaining part 39,and is preferably formed by respectively arranged and/or dimensionedindentions, coding portions 63, such as protrusion, indentions, recessesor the like, in particular formed by or at the retaining ring or part39, as schematically shown in FIG. 11 . Only when the codings match, thehousing part 18 and, thus, the container 3 can be pre-installed and/or(completely) connected to or with the nebulizer 1.

Before (completely) closing the nebulizer 1 or its housing part 18, thedevice 48 or indicator member 50 may indicate by a respective symbol 53,such as an arrow pointing upwards, to completely close the nebulizer 1or housing part 18.

When the housing part 18 is completely closed, the container 3associated to the housing part 18 is fluidically connected to thenebulizer 1. This is detected or registered by the nebulizer 1 or device48. This detection of the connection of the housing part 18 and, thus,of an associated container 3 is preferably realized mechanically, inparticular by actuating one of the stop elements 61 to allow the member50 to index one step further, i.e. until the other stop element 61 stopsfurther indexing or rotation of the member 50. In the presentembodiment, this registration or actuation is preferably achieved by aprotrusion 64 formed at the housing part 18, in particular at its upperfront face, as shown in particular in FIG. 7 . When completely closingnebulizer 1, the protrusion 64 abuts one associated stop element 61 orcontact element 61 a and consequently flexes the stop element 61 orcontact element 61 a upwards such that it does not stop a correspondingstop portion 54 of the member 50 anymore, but allows the member 50 tomove or rotate one step further, i.e. until the other stop element 61,which has not been flexed out of engagement in this state, stops furtherrotation by stopping a corresponding stop portion 54, preferably anotherone of stop portions 54.

As already mentioned, the container 3 is preferably inseparable from thehousing part 18, the associated counter device 23 and/or associatedsecuring device 32. Thus, after connection of a new container 3 with thenebulizer 1, the associated counter device 23 starts counting of thenumber of operations or uses of the respective container 3 that havealready been performed or still can be performed. This operation numbermay be indicated or shown by the counter device 23 or its rider 44 orpointer 46 as already mentioned, while the device 48 or member 50preferably only shows the container number 52, i.e. the number ofcontainers 3 that have already been used or still can be used with thenebulizer 1.

Preferably, the nebulizer 1 is blocked against opening until the currentcontainer 3 has been (sufficiently) emptied, and/or until apredetermined number of operations or actuations has been reached orexceeded. This blocking of the nebulizer 1 or its housing part 18against opening and/or container replacement is preferably achieved by arespective blocking portion 55 of the member 50 located below theretaining element 19 in this state as schematically indicated e.g. inFIG. 9 , such that the retaining element 19 cannot be depressed, i.e.the nebulizer 1 cannot be opened and the housing part 18 cannot bedetached.

When a predetermined number of operations or actuations of the nebulizer1 has been reached, the nebulizer 1 is blocked against further use withthe current container 3. This blocking is also called first lockedstate.

The first locked state is entered preferably by means of the counterdevice 23. In particular, the rider 44 or its actuation part 47cooperate with the device 48 to enter the first locked state, when apredetermined number of operations have been reached or exceeded withthe current container 3. Particularly, the rider 44 or its actuationpart 47 reach an upper axial position in this state and actuate arespective stop element 61 or contact element 61 a that is in blockingposition or engagement with a stop portion 54. Thus, the stop element 61or contact element 61 a is preferably flexed or deformed such that thepreviously stopped stop portion 54 can pass and the member 50 is free toindex one step further by the force of spring 51. FIG. 8 shows asituation, in which the rider 44 and actuation part 47 are already nearthe upper position and near the position to actuate the associated stopelement 61 or contact element 61 a. However, in the state shown in FIG.8 one stop portion 54 and the member 50 are still blocked againstrotating one step further.

The above indexing of the member 50 by one step leads to the firstlocked state. In this state, the nebulizer 1 or retaining element 19 isunblocked so that it can be opened. In particular, the blocking portion55 blocking actuation of the retaining element 19 in the previous stateis moved further, so that the retaining element 19 is not blocked anymore, but can be actuated or pushed in order to allow detachment of thehousing part 18 for container replacement.

In the first locked state the nebulizer 1, device 48 or member 50indicates preferably by a respective symbol 53, in particular by anarrow pointing downwards, that container replacement is necessary and/orthat the nebulizer 1 is locked against further use with the currentcontainer 3.

By the above indexing of the member 50 to reach the first locked state,the nebulizer 1 is locked against further use. This is achieved inparticular in that the member 50 drives the lock 57 to lock thenebulizer 1 against further actuation, preferably against furthertensioning of the drive spring 7 and/or against rotating of the housingpart 18. This is preferably realized in that the rotation of the member50 flexes the lock 57 or portion 59 of the locking member 58 radiallyoutwards so that the flexed portion 59 leaves its non-locking position,into which it is biased, and locks further rotation of the inner part 17relative to the upper housing part 16. This locking is in particularlyachieved in that a free end of the portion 59 engages into a respectivetoothing or against respective abutment surfaces formed at the innersurface of the upper housing part 16. In this respect it has to be notedthat the device 48 is preferably arranged or mounted on inner part 17,particular on its upper part 17 a, wherein the preferably ring-likelocking member 58 is preferably arranged around the rotatable member 50.The locking member 58 is preferably secured against rotation relative tothe inner part 17 by respective form fit engagement, preferably of theinner part 17 or at least one protrusion 17 c thereof into a recess 65of the locking member 58. In the present embodiment, the recess 65 ispreferably formed like a pocket or a portion cut-out of the peripheryfrom one axial side. In particular, the locking member 58 may beprovided with two or more recesses 65 as schematically shown in FIGS. 14and 15 , for engagement of respective protrusions 17 c or the like, inparticular of the associated inner part 17. However, otherconstructional solutions are possible as well.

Consequently, only member 50 is rotatable relative to inner part 17 and,thus, to locking member 58. However, locking member 58 is rotatabletogether with inner part 17 relative to upper housing part 16.

As already mentioned, the control member 50 is moveable, in particularrotatable, relative to locking member 58. This relative rotation ismeant when any rotation or indexing of the control member 50 ismentioned. In this context, it has to be considered that the device 48and the locking member 58 are rotated together with the inner part 17,but this rotation is different as this is the movement for tensioningthe energy store, here spring 7, and/or for delivering or sucking fluid2 out of the container 3 by in particular axial movement of theconveying element or tube 9.

The construction mentioned above, results in that the device 48 isrotated together with the inner part 17 each time the lower housing part18 is rotated, i.e. when tensioning the drive spring 7. This rotation ispreferably performed in 180° steps. Therefore, the device 48 orindicator member 50 comprises preferably two sets of respective number52 and/or symbols 53 that are shown alternately through the window 49.

Thus, the member 50 comprises preferably two groups of numbers 52 and/orsymbols 53, each group with the respective sequence of numbers 52 and/orsymbols 53, wherein the groups are arranged offset by 180° on the member50. This offset correspondence to the rotational angle for eachrotational actuation of the lower housing part 18 and inner part 17 fortensioning the nebulizer 1/drive spring 7.

Preferably, the control portions 56 and/or the peripheral parts of thecontrol member 50 in between the portion 56 form an inclined or controlplane or surface cooperating with the portion 59 or its cam orcorrugation 60 such that the lock 57 or the locking can be actuatedalone by the force of the spring 51 acting on the member 50. Inparticular, the spring 51 or member 50 drives the lock 57. Further, themember 50 controls the lock 57 or the locking. As the member 50 alsoforms an indicator member, the indicator member drives the lock 57 orlocking as well.

In the present embodiment, the locking member 58 is preferably arrangedoutside or around the control member 50 at least around a cylindricalmain part of control member 50. In particular, the locking member 58encompasses or covers at least substantially the cylindrical main partof the control member 50. The locking member 58 comprises preferably twoopenings 66 (shown in FIGS. 14 and 15 ) that are alternately alignedwith window 49 depending on the rotational position of inner part 17and, thus, of the locking member 58 so that the respective number 52and/or symbol 53 is visible through the window 49 and through lockingmember 58.

In the first locked state, the member 50 is preferably stopped againstfurther rotation by the protrusion 64 where any other part correspondingto the attachment of the housing part 18. When the housing part 18 isdetached from the nebulizer 1 or its upper housing part 16 or inner part17 for container replacement, this detachment is registered byunblocking the further movement or rotation of the member 50. Inparticular, a stop portion 54 of the member 50 which has been stopped byprotrusion 64 or the like, can pass after detachment of the housing part18 so that the member 50 can index one step further. In this furtherrotational position, the nebulizer 1 is still in its first locked state,i.e. is still locked against further use, in particular against furtheractuation or tensioning of the drive spring 7. However, the member 50may show the next symbol 53, in particular an arrow pointing upwards,indicating that a new container 3 has to be connected and/or that a newhousing part 18 has to be connected to the nebulizer 1. This situationcorrespondents to the initial situation before first assembly of thenebulizer 1 with the housing part 18 as already described.

It has to be noted that the stop element 8 is preferably blocked againstactuation, in particular against release of the holder 6 and drivespring 7 in the first locked state. This actuation locking will also beachieved by the device 48 or member 50.

When the housing part 18 and the associated container 3 have beenreplaced, this is registered by the device 48, in particular byactuation of the corresponding stop element 61 by means of theprotrusion 64. Then the member 50 indexes one step further and shows thenext container number 52. Then, the lock 57 is reset, i.e. opened orunlocked again. Thus, the nebulizer 1 is unlocked and can be usedfurther with the new container 3. Simultaneously, the container 3 orhousing part 18 is preferably locked again against opening or containerreplacement, in particular in that the next blocking portion 55 ispositioned below retaining element 19 to prevent actuation of theretaining element 19 which is necessary for opening the nebulizer 1.

The above sequence can be repeated, i.e. new containers 3 and newhousing parts 18 can be used one after the after with the nebulizer 1,wherein the device 48 or indicator member 50 displays or shows thecontainer number 52 and, preferably, symbols 53 for user guidance, inparticular to indicate any necessary container replacement and/orindicating to open and close the nebulizer 1 or the like. The containernumber 52 relates in particular to the number of containers 3 that havealready been used with the nebulizer 1 or still can be used with thenebulizer 1. In particular, one or more symbols 53 are displayed orshown alternately with the consecutive container numbers 52. This isrealized preferably by one comment component, namely indicator member50. However, other constructional realizations are possible.

Further, the display of the container numbers 52 and/or symbols 53 workspreferably only mechanical.

In particular, the device 48 and/or the lock 57 work only mechanical.

After a predetermined number of containers 3 have been connected to orwith the nebulizer 1, the nebulizer 1 will be blocked against furthercontainer replacement. After using the lastly inserted or connectedcontainer 3, the nebulizer 1 will enter the final locked state, i.e. thesecond locked state, preferably where the lock 57 or nebulizer 1 isblocked against resetting and/or the nebulizer 1 or housing part 18 isblocked against opening. This second locked state is entered inparticular after the predetermined number of operations has been reachedor exceeded with the ultimate, current container 3. Similar to theprevious process the counter device 23 or its rider 44 or actuation part47 actuates the device 48, in particular the corresponding stop element61 to allow to index the member 50 one step further into its finalrotational position. Thus, the second locked state is entered.

In the second lock state, the control member 50 cannot be rotated anyfurther. This is realized in the present embodiment in particular inthat the bearing portion 67 abuts one protrusion 17 c of the inner part17 engaging into one of the recesses 65. However, other constructionalsolutions are possible in order to realize the desired rotational stopor blocking for the control member 50 in the final rotational position,i.e. in the second locked state.

In the second locked state, the device 48 or member 50 does not allowopening of the nebulizer 1 or housing part 18 as it would be in the casein the first locked state. Instead, the member 50 comprises arespectively designed, preferably sufficiently long blocking portion 55to block the retaining element 19 further against actuation and, thus,to block the nebulizer 1 against opening and container replacement.

In the second locked state, the nebulizer 1 can be locked againstfurther actuation, in particular against tensioning of the drive spring1 and/or rotation of the housing part 18 or inner part 17. This can berealized by actuating the lock 57, in particular by flexing portion 59radially (preferably outwards) by the member 50 or its correspondingcontrol portion 56. In the second locked state, the nebulizer 1 ispreferably locked against any further discharge of fluid 2, inparticular by blocking actuation of the stop element 8. This ispreferably also realized by device 48.

Therefore, the nebulizer 1 cannot be used anymore after the secondlocked state has been entered. The second locked state is notreversible. In particular, resetting or unlocking of the lock 57 is notpossible, but prevented in the second locked state.

As already outlined above, some general aspects or ideas of thenebulizer 1 according to the preferred embodiment can be summarized asindicated in the following.

The device 48 consists preferably only of two parts (control member 50and locking member 58) or three parts (control member 50, spring 51 andlocking member 58), but provides multiple functions, in particulardisplaying of numbers 42 and/or symbols 53 and/or user instructions,locking of the nebulizer 1 against further use, locking of the nebulizer1 against tensioning, and/or locking of the nebulizer 1 against openingor container replacement.

The nebulizer 1 may comprise the indicator member 50 for showingnumbers, in particular container numbers 52 and alternately symbols 53indicating container replacement and/or nebulizer opening and/orclosing.

The indicator member 50 may be moved or rotated stepwise by the force ofthe spring 51.

The indicator member 50 may drive the lock 57 of the nebulizer 1 suchthat the nebulizer 1 is locked against further use in the first lockedstate, when he container 3 has to be replaced, wherein the first lockedstate is reset by indexing the indicator member 50 and/or resetting thelock 57 if the container 3 and/or housing part 18 have been replaced.

The indicator member 50 is preferably ring-like.

The indicator member 50 works or shows the numbers 52 and/or symbols 53mechanically.

The nebulizer 1 comprises preferably the lock 57 for locking thenebulizer 1 against further use in the first locked state, in particularwhen the container 3 has to be replaced.

Preferably, the first locked state is reset by resetting the lock 57, ifthe container 3 and/or housing part 18 have been replaced. With otherwords, the lock 57 is preferably resettable and can be used furtherafter container replacement. In particular, an exchange or replacementof the lock 57 is not necessary to reuse the nebulizer 1.

The nebulizer 1 comprises preferably the control member 50 forcontrolling or driving the lock 57.

The control member 50 is preferably moved or rotated stepwise by theforce of the spring 51.

The lock 57 and/or first locked state is preferably blocked againstresetting in the second locked state.

The second locked state is preferably entered when a predeterminednumber of containers 3 has been used or inserted into the nebulizer 1and, preferably after a predetermined number of operations has beenperformed or exceeded with the nebulizer 1 after inserting the lastcontainer 3.

The control member 50 is preferably ring-like.

Preferably, the control member 50 forms the indicator member or viceversa.

The control member 50 displays preferably the numbers 52 of containers 3that have been used or still can be used and/or the symbols 53indicating containing replacement and/or user guidance or nebulizerhandling.

The control member 50 blocks preferably opening of the nebulizer 1and/or container replacement until a predetermined number of operationshas been reached or exceeded with the current container 3.

Preferably, the nebulizer 1 is locked against opening or containerreplacement, in particular by means of the control member 50, in thesecond locked state.

Preferably, the nebulizer 1 is locked against opening or containerreplacement, in particular by means of the control member 50, before thefirst locked state has been reached.

Preferably, the lock 57 locks the nebulizer 1 in the first and/or secondlocked state against conveying fluid 2 into the pressure generator 5and/or against tensioning of the drive spring 7 of the nebulizer 1and/or against rotation or turning of the housing part 18 or inner part17.

Preferably, the housing part 18 has to be replaced each time thecontainer 3 is replaced. In particular, the container 3 is inseparablefrom the housing part 18 and/or counter device 23 or vice versa.

The securing device 32, in particular its moved apart locking portions33 b, preferably prevent that the used and/or detached container 3 canbe re-connected to or reused with the nebulizer 1 once more and orprevent that a used or detached housing part 18 can be reconnected tothe nebulizer 1 once more.

Preferably, the housing part 18 can be or has to be detached or openedfor replacing the container 3.

Preferably, the securing device 32 is associated to the container 3preventing that a used container 3 can be connected or used with thenebulizer once more.

FIGS. 16 to 25 show preferred aspects and/or preferred modifications ofthe nebulizer 1 according to the present invention. The previousdescriptions and explanations apply preferably in addition even if arepetition is omitted.

FIG. 16 shows the upper part 16 of the nebulizer 1 in a partial,schematic sectional view. FIG. 17 shows a schematic sectional viewperpendicular to the plane of FIG. 16 essentially in the plane of theindicator/control member 50.

The nebulizer 1 comprises preferably a blocking device 68 which—in thetensioned state of the nebulizer 1 or energy store or drive spring7—blocks opening of the nebulizer 1 or housing and/or blocks detachmentof the housing part 18 and/or blocks indexing of the member 50.

In particular, the member 50, preferably the rotational position ofmember 50, controls locking and unlocking of the housing or housing part18 or retaining element 19. Thus, the blocking device 68 blocks openingof the housing or detaching of the housing part 18 in the tensionedstate of the nebulizer 1 preferably via or by means of theindicator/control member 50, in particular by selectively blockingindexing of a member 50.

Preferably, the housing of the nebulizer 1 is blocked against opening ina form-fit manner when the nebulizer 1 is in its tensioned state.

Preferably, the blocking device 68 comprises a blocking element 68 a asshown in different perspective views in FIGS. 18 and 19 .

The blocking device 68 or blocking element 68 a comprises preferably ablocking part 68 b for engaging or cooperating with the member 50 (seeFIG. 17 ) and/or for blocking the member 50 against rotational indexing,when the nebulizer 1 or its energy store (drive string 7) is in thetensioned state.

The blocking part 68 b protrudes or extends preferably radially.

The blocking element 68 a or blocking part 68 b is preferably moveableaxially and/or selectively in engagement with member 50, in particularwith a member recess 72, and out of engagement.

Preferably, the blocking element 68 a or blocking part 68 b hasdifferent (axial) positions depending on the state of the nebulizer 1,namely tensioned or un-tensioned, and/or is moveable between differentpositions in response to the movement of the container 3 or holder 6 ordrive spring 7 at its end at the holder 6.

Thus, by the cooperation of blocking part 68 b with the member 50, theblocking device 68 preferably always blocks the member 50 againstrotational indexing, when the nebulizer 1 or its energy store (drivestring 7) is in the tensioned state.

FIGS. 16 and 17 show the nebulizer 1 in the tensioned state. Theblocking device 68 blocks opening of the nebulizer 1. In particular, theblocking device 68 or its blocking element 68 a blocks indexing of themember 50. The blocking element 68 a or blocking part 68 b engagespreferably into member 50 or a member recess 72 such that member 50cannot index one step further even if the predetermined number of usesof the nebulizer 1 with the current container 3 has been reached orexceeded, i.e. even if when the rider 44 or actuation part 47 hasreached the upper axial position and actuated the respective stopelement 61 or contact element 61 a so that the member 50 should be freeto index into the first or second locked state. However, the member 50is blocked against indexing by the blocking device 68 or blocking part68 b until the nebulizer 1 is non-tensioned, i.e. the energy store ordrive spring 7 is relaxed, and fluid 2 is dispensed for the last timefrom the current container 3.

Preferably, the blocking device 68 or its blocking part 68 b prevent anyindexing of the member 50 in the tensioned state of the nebulizer 1independent on the position of the counter device 23 or its rider 44,i.e. each time the nebulizer 1 is tensioned.

The blocking element 68 a is preferably received or guided in an innerrecess of the inner part 17, in particular upper part 17 a of inner part17. The inner part 17 or upper part 17 a comprises preferably at leastone guiding element 71, in particular two guiding ribs or elements 71,in particular on opposite sides, for holding the blocking element 68 a,in particular such that it can move axially relative to the inner part17 and/or the member 50. Preferably, the blocking element 68 a issnapped in a gliding rail or the like, here formed preferably by theguiding elements 71.

In the present embodiment, the blocking device 68 or blocking element 68a or blocking part 68 b is moved or driven preferably by the movement ofthe container 3, the drive spring 7 or the holder 6. In particular, theblocking device 68 or blocking element 68 a engages with an engagementpart 68 g into a holder recess 69 formed in the holder 6. In particular,the engagement or coupling of the blocking device 68 or blocking element68 a with the holder 6 or any other component driving or moving theblocking device 68 or blocking element 68 a can be realized as a rigidconnection or alternatively as a flexible or articulated engagementand/or as any other suitable drive connection e.g. with play, relativemovability between the interconnected parts, an intermediatetransmission element or the like.

In the tensioned state of the nebulizer the container 3, holder 6 andholder side of the drive spring 7 are in a different axial position thanin the untensioned state. Thus, different positions of the blockingdevice 68 engaged to or triggered by at least one these components alsocorrespond to the tensioned and untensioned state of the nebulizer 1,respectively.

In the present embodiment, the blocking device 68 or blocking element 68a comprises in addition to the blocking part 68 b preferably a base 68 cand/or guiding part 68 d.

The base 68 c holds preferably the blocking part 68 b which protrudespreferably radially outwardly from the blocking element 68 a or base 68c.

The guiding part 68 d is provided preferably with noses 68 e, inparticular at opposite sides and respectively offset, such that theblocking element 68 a or guiding part 68 d is moveably guided and heldby means of the guiding elements 71 of the inner part 17 engaging inbetween the noses 68 e. However, other constructional solutions arepossible as well.

The blocking device 68 or blocking element 68 a comprises preferably anarm 68 f for holding the engagement part 68 g. In the presentembodiment, the arm 68 f extends essentially in axial direction and isinclined from the inner part 17 to the holder 6 within the inner part 17so that the engagement part 68 g can preferably completely sit in orengage into the holder recess 69 of the holder 6.

Generally it is possible to connect the engagement part 68 g and, thus,the blocking element 68 a, rigidly with one of the components, inparticular the holder 6, for following the axial movement, in particularover the entire axial stroke. However, it is also possible to reduce thestroke of the engagement part 68 g and, thus, of the blocking element 68a in comparison to the stroke of the container 3, holder 6 and the like,wherein different end stops limiting the stroke of the blocking element68 a can be provided, as it is preferred in the present embodiment.

In particular, the engagement part 68 g has play (i.e. can move relativeto the holder 6) in the holder recess 69 in the axial direction ofmovement. Alternatively or additionally, the holder recess 69 may beopen towards the drive spring 7 so that the end of the drive spring 7forms one (axial) end stop for the engagement part 63 g and, thus, forthe blocking element 68 a. The other or upper end stop 69 a ispreferably formed by the other end of the holder recess 69, as shown inFIG. 16 . However, the holder recess 69 could form both end stops ifdesired.

The position of the end stops define the end of the movement of theengagement part 68 g relative to the axial stroke or movement of thecontainer 3 and holder 6 and, thus, defines the coupling.

In the present embodiment, the holder recess 69 is preferably opentowards the drive spring 7, but forms the upper end stop 69 a asindicated in FIG. 16 . The lower end stop is preferably formed by thedrive spring 7, more precisely by its upper end, but could be formed byany suitable component.

The engagement part 68 g follows—at least partly, in particulardepending on the position of the end stops—the axial movement of theholder 6 and/or drive spring 7 and, thus, the back and forth movement ofthe container 3. This drive movement of the engagement part 68 gpreferably transmitted by arm 68 f controls, moves or drives theblocking device 68 or blocking element 68 a, in particular the blockingpart 68 b.

The orientation or position, such as upwards, downwards, upper, lower orthe like mentioned above or used in the following, refers to the usualorientation of the nebulizer 1 or container 3 where the nebulizer 1 isat least essentially vertical and/or the outlet, nozzle 12 or mouthpiece13 points upwards and/or the housing part 18 is at the bottom of thenebulizer 1 and/or the axial direction of the container 3 or itsmovement is vertical and/or the fluid outlet 24 or head of the container3 is directed vertically upwards.

The counter device 23 is preferably driven by the movement, inparticular rotation, of the housing part 18 or inner part 17 relative tothe housing or upper part 16 for tensioning the nebulizer 1, energystore or drive spring 7. Thus, the counter device 23 or its rider 44 oractuation part 47 will reach its final axial end position (upperposition) when the nebulizer 1 is tensioned for the last time. In thisend position, the counter device 23 or its rider 44 or actuation part 47unlocks the member 50 in particular by flexing stop element 61 orcontact element 61 a out of locking engagement with member 50 or therespective stop portion 54. However, the blocking device 68 or blockingpart 68 b still prevents the member 50 from indexing one step furtherinto the first or second locked state until the nebulizer 1 has beenactuated for the last time with the present container 3 to relax theenergy store or drive spring 7.

The actuation of the nebulizer 1, i.e. release of drive spring 7,results namely in that the holder 6 and container 3 move axially towardsthe mouthpiece 13, i.e. upwards, and, simultaneously the blocking device68 or its blocking part 68 b is moved out of engagement with memberrecess 72 or member 50 so that member 50 is free to index one step intothe first or second locked state.

In the present embodiment, the upper end of the drive spring 7 forms thelower end stop which abuts at the lower end of the engagement part 68 gof the blocking element 68 a and finally moves the blocking part 68 bout of engagement with member recess 72 or member 50 when the holder 6and container 3 move upwards.

It has to be noted that during each downward movement of the holder 6 orduring each tensioning of the nebulizer 1 or drive spring 7, the holder6 or more precisely, the upper end stop 69 a, moves or pushes theengagement part 68 g and, thus, the blocking element 68 a downwardsand/or into engagement with member 50, in particular such that blockingpart 68 b moves axially into member 50 or its member recess 72.

In the first locked state, the member 50 unlocks the retaining element19 so that the nebulizer 1 or its housing can be opened, in particularthe housing part 18 can be detached, for replacing the container 3, inparticular together with the housing part 18 and counter device 23.

It has to be noted that the member 50 comprises preferably multipleengagement possibilities, in particular member recesses 72, so that theblocking device 68 or blocking part 68 b can engage into the respectivemember recess 72 depending on the actual rotational position of themember 50 in response to the actual number of containers 3 already used.

FIG. 20 shows in a schematic section an upper part of the nebulizer 1.The nebulizer 1 comprises preferably an indicator device 73 forindicating the state, in particular a tensioned state, of the nebulizer1. In particular, the indicator device 73 indicates a tensioned state ofthe nebulizer 1 and a non-tensioned state of the nebulizer 1.

FIG. 20 shows the nebulizer 1 in the non-tensioned state. The stopelement 8 is depressed or moved to the left side in the presentrepresentation.

FIG. 21 shows a similar schematic section of nebulizer 1 as FIG. 20 ,wherein the nebulizer 1 is in the tensioned state. Here, the stopelement 8 is in its blocking position where it is moved to the rightside in the present representation and where it blocks upward movementof the holder 6 and, thus, of the container 3.

In the present embodiment, the indicator device 73 comprises preferablyan indicator element 74. The indicator element 74 is preferably drivenor moveable, in particular pivotable, by the stop element 8.

In the present embodiment, the indicator device 73 or indicator element74 comprises preferably at least one indicator portion 75 withpreferably different colors, symbols or the like for indicating the(pivotable) position of the indicator element 74 and/or of the stopelement 8 and, thus, the state of the nebulizer 1 (tensioned ornon-tensioned).

The nebulizer 1 or its upper part 16 comprises preferably a window 78for viewing at least part of the indicator element 74 or indicatorportion 75 to indicate the state.

In the present embodiment, the indicator element 74 comprises preferablyan engagement portion 76, e.g. a protrusion, bolt or the like. The stopelement 8 comprises preferably a drive portion 77, which is preferablyfork-like and/or engages the engagement portion 76 for driving ormoving, in particular pivoting, the indicator element 74 depending onthe (radial) position of the stop element 8. However, otherconstructional solutions for coupling or linking the stop element 8 withthe indicator device 73 are possible.

FIG. 22 shows the nebulizer 1 in a schematic sectional view withoutinner components, in particular without container 3, drive spring 7,holder 6, pressure generator 5 and nozzle 12. In FIG. 22 , the housingpart 18 is detached. FIG. 23 shows the nebulizer 1 in a similarschematic section as FIG. 22 , wherein the housing part 18 is partlyattached to the nebulizer 1 or inner part 17. FIG. 24 shows thenebulizer 1 in a similar schematic section as FIG. 22 , wherein thehousing part 18 is completely attached to the nebulizer 1 or inner part17. FIG. 25 shows a partial enlargement of the encircled area of FIG. 24.

The nebulizer 1 comprises preferably a manually depressable actuatormember 79, in particular in the form of a button or the like, at thehousing part 18. Preferably, the actuator member 79 is received or heldin a housing recess 81 formed at or by the housing part 18.

In the present embodiment, the actuator member 79 is preferablyconnected with or held by an actuator portion 80 or formed as a unitarypiece with the actuator portion 80. Preferably, the actuator portion 80is for securing the actuator member 79 at the housing part 18 and/orbiasing the actuator member 79 into its non-depressed position shown inFIGS. 22 to 25 .

Preferably, the retaining element 19 is connected with and notdetachable from the nebulizer 1 or its inner part 17, i.e. is separatedfrom the housing part 18 when detaching the housing part 18, as it isthe case e.g. in the embodiment shown in FIGS. 7 and 9 . However, in thepreferred modification, the actuator member 79 is a separate part and isnot formed by or connected with the retaining element 19, but separatedtherefrom when detaching the housing part 18 from the nebulizer 1 orinner part 17. This facilitates handling because the user (not shown)can leave a finger on the actuator member 79 when pulling the housingpart 18 from the inner part 17 for opening the housing.

The housing part 18 comprises preferably a holding portion 82, inparticular a shoulder or nose formed at the side of the housing recess81 and/or adjacent to the actuator member 79, for interacting orcooperating with at the retaining element 19 or a retaining shoulder 83of the retaining element 19.

FIG. 23 shows a partly attached or detached position of the housing part18. Here, the holding portion 82 can engage into a retaining recess 84formed at the retaining element 19 for holding the holding part 18 inthis position.

Preferably, the retaining recess 84 and/or holding portion 82 comprisesrespectively inclined surfaces so that it is possible only to push thehousing part 18 completely on the inner part 17, i.e. to completelyclose the housing, without actuating or depressing the actuator member79 so that the nebulizer 1 can be completely closed as shown in FIGS. 24and 25 .

In the completely closed state, the holding portion 82 extendspreferably over the retaining shoulder 83 so that the housing part 18 issecured in form-fit manner at the nebulizer 1 or inner part 17 orretaining element 19.

When depressing the actuator member 79, the retaining element 19 canflex inwardly (if not blocked by a blocking portion 55 of the member 50as shown e.g. in FIG. 9 ) to move the retaining shoulder 83 inwards sothat the housing part 18 can pass with its retaining shoulder 83 whendetaching the housing part 18 in axial direction from the nebulizer 1.

The retaining element 19 comprises preferably a retaining portion 85which extends towards the member 50 and can be selectively blockedagainst depression by the blocking portion 55 depending on therotational position of the member 50. In FIGS. 22 to 25 , theschematically shown blocking portion 55 adjacent to the retainingelement 19 or retaining portion 85 is preferably circumferentiallyoffset due to the rotational position of the member 50, so that theretaining portion 85 can move axially inwardly when the actuator member79 is depressed and/or when attaching the housing part 18 to thenebulizer 1 and the passing of holding portion 82 results in an inwardmovement of the retaining element 19.

It has to noted that the blocking of opening of the nebulizer 1, i.e.the blocking of detaching the housing part 18 from the nebulizer 1 orinner part 17, functions in the previous embodiment preferably in asimilar manner, namely by blocking the retaining element 19 againstdepression by means of one of the blocking portions 55 depending on therotational position of the member 50 (compare FIG. 9 for example).

As already mentioned, individual features, aspects and/or principles ofthe embodiments described may also be combined with one another asdesired and may be used particularly in the nebulizer according to FIGS.1 and 5 but also in similar or different nebulizers.

Unlike freestanding equipment or the like the proposed nebulizer 1 ispreferably designed to be portable and in particular is a mobile handoperated device.

The proposed solution may, however, be used not only in the nebulizers 1specifically described here but also in other nebulizers or inhalers,e.g. powder inhalers or so-called metered dose inhalers.

Preferably, the fluid 2 is a liquid, as already mentioned, especially anaqueous pharmaceutical formulation or an ethanolic pharmaceuticalformulation. However, it may also be some other pharmaceuticalformulation, a suspension or the like.

According to an alternative embodiment the fluid 2 may also compriseparticles or powder. In this case, instead of the expulsion nozzle 12,some other kind of supply device may be provided, especially anexpulsion opening (not shown) or a supply channel (not shown) forsupplying the fluid to or powder or the like into the mouthpiece 13. Theoptional air supply opening 15 then serves to supply ambient airpreferably in parallel so as to general or allow an airflow with asufficient volume for breathing in or inhaling through the mouthpiece13.

If necessary the fluid 2 may also be atomized by means of a propellantgas.

Preferred ingredients and/or formulations of the preferably medicinalfluid 2 are listed in particular in WO 2009/115200 A1, preferably onpages 25 to 40, or in EP2 614 848 A1, paragraphs 0040 to 0087, which areincorporated herewith by reference. In particular, these may be aqueousor non-aqueous solutions, mixtures, formulations containing ethanol orfree from any solvent, or the like.

LIST OF REFERENCE NUMERALS

1 nebulizer

2 fluid

3 container

4 bag

5 pressure generator

6 holder

7 drive spring

8 stop element

9 conveying tube

10 non-return valve

11 pressure chamber

12 nozzle

13 mouthpiece

14 aerosol

15 air supply opening

16 upper housing part

17 inner part

17 a upper part of the inner part

17 b lower part of the inner part

17 c protrusion

18 housing part (lower part)

19 retaining element

20 spring

21 container base

22 piercing element

23 counter device

24 fluid outlet

25 first closure

26 second closure

27 closure part

28 flange

29 transportation lock

30 securing member

31 venting hole

32 securing device

33 holding element

33 a end portion

33 b locking portion

33 c protrusion

34 locking element

34 a end portion

34 b actuation portion

35 base

36 spring portion

37 fixing portion

38 edge

39 retaining part

40 securing part

41 guiding surface

42 threaded shaft

43 drive gear

44 rider

45 toothing

46 pointer

47 actuation part

48 device

49 window

50 indicator/control member

51 spring

52 number

53 symbol

54 stop portion

55 blocking portion

56 control portion

57 lock

58 locking member

59 tongue-like portion

60 corrugation

61 stop element

61 a contact element

62 rib

63 coding portion

64 protrusion

65 recess

66 opening

67 bearing portion

68 blocking device

68 a blocking element

68 b blocking part

68 c base

68 d guiding part

68 e nose

68 f arm

68 g engagement part

69 holder recess

69 a end stop

70 inner recess

71 guiding element

72 member recess

73 indicator device

74 indicator element

75 indicator portion

76 engagement portion

77 drive portion

78 window

79 actuator member

80 actuator portion

81 housing recess

82 holding portion

83 retaining shoulder

84 retaining recess

85 retaining portion

What is claimed is:
 1. A nebulizer (1) for a fluid (2), comprising: acontainer (3) containing the fluid (2); a housing part (18) which can bedetached from the nebulizer (1) for replacing the container (3); aninner part (17); a retaining element (19) connected with and notdetachable from the inner part (17), wherein the housing part (18) isreleasable fixed to the inner part (17) by the retaining element (19); adelivery mechanism for dispensing the fluid (2); and a manuallydepressible actuator member (79), which is a separate part from theretaining element (19) and acts on the retaining element (19), whereinthe actuator member (79) is depressed to elastically deform or flex theretaining element (19) to allow detachment of the housing part (18). 2.The nebulizer according to claim 1, wherein the housing part (18) formsa cap-like lower housing part and fits around or over a lower free endportion of the container (3).
 3. The nebulizer according to claim 1,wherein the retaining element (19) forms a catch or snap forautomatically holding or securing the housing part (18) when it isshifted onto or into the nebulizer (1).
 4. The nebulizer according toclaim 1, wherein the housing part (18) comprises a holding portion (82)for interacting or cooperating with the retaining element (19) or aretaining shoulder (83) of the retaining element (19).
 5. The nebulizeraccording to claim 4, wherein, when depressing the actuator member (79),the retaining element (19) flexes inwardly to move the retainingshoulder (83) inwards, so that the housing part (18) passes theretaining shoulder (83) when detaching the housing part (18) in axialdirection from the nebulizer (1).
 6. The nebulizer according to claim 1,wherein the retaining element (19) is adapted to hold or secure thehousing part (18) with two catch positions, i.e. a first catch positionwith partly closed housing part (18) of the nebulizer (1) and a secondcatch position with completely closed housing part (18).
 7. Thenebulizer according to claim 1, wherein the actuator member (79) isconnected with or held by an actuator portion (80).
 8. The nebulizeraccording to claim 7, wherein the actuator portion (80) biases theactuator member (79) into its non-depressed position.
 9. The nebulizeraccording to claim 1, wherein the actuator member (79) is detachabletogether with the housing part (18) from the nebulizer (1).
 10. Thenebulizer according to claim 1, wherein the actuator member (79) isreceived or held in a housing recess (81) formed at or by the housingpart (18).
 11. The nebulizer according to claim 1, wherein the nebulizer(1) comprises a blocking device (68) adapted to block, when thenebulizer (1) is in a tensioned or loaded state, opening of the housingand/or indexing of an indicator member (50) which shows numbers (52)and/or symbols (53).
 12. The nebulizer according to claim 11, whereinthe retaining element (19) is blocked against deforming or flexing bythe blocking device (68) or indicator member (50) in the tensionedstate.
 13. The nebulizer according to claim 11, wherein the blocking isterminated automatically after dispensing a dose of fluid (2).
 14. Thenebulizer according to claim 11, wherein the blocking device (68) blocksrotation of a control member (50) and/or of the indicator member (50) inthe tensioned state.
 15. The nebulizer according to claim 14, whereinthe control member (50) and/or indicator member (50) controls theopening of the housing and/or locks the nebulizer or housing part (18)selectively against opening.
 16. The nebulizer according to claim 11,wherein the blocking device (68) is driven, controlled or actuated by aposition or movement of the container (3) within the housing and/or by aposition or movement of a holder (6) holding the container (3) withinthe housing and/or by a position or movement of a drive spring (7). 17.The nebulizer according to claim 11, wherein the blocking device (68)comprises a blocking element (68 a) which is axially moveably held bythe inner part (17) of the nebulizer (1), where the inner part (17) isrotatable.
 18. The nebulizer according to claim 11, wherein the housingis blocked against opening and/or container replacement until thecontainer (3) has to be replaced due to multiple dispensing of fluid (2)and until the nebulizer (1) or an energy store has been released bydispensing fluid (2) or is in a non-tensioned state.